docs: def get_stored_hash(self, temp_ver):
          """
          Retrieves the hash for the given template version from the store
  
          Args:
              temp_ver (TemplateVersion): template version to retrieve the hash
                  for
  
          Returns:
              str: hash of the given template version
          """
          with open(self._prefixed('%s.hash' % temp_ver.name)) as f:
              return f.read().strip()